LDAP connection Synology and UCS

Hi
I am pretty new to UCS but most things have been straight forward for now. Nevertheless I am trying to get a synology nas to connect to the ldap server of ucs. The issue that I am having is

It finds it find but when asked for admin password it gives me a permissions error.
If I change to encrypted password like tls I get invalid password error. Though of course this is not the case.
Am I missing something simple here?

Thanks
Mac